I am submitting 6 questions, only 1 per post. Can you please help me answer this

Question

I am submitting 6 questions, only 1 per post. Can you please help me answer this question and show the work for how you got it?

Researchers examined the mechanical properties of webs spun by the orb spider, Nephelia edulis.2 A table in the publication reports summary statistics for a number of variables in the form of the mean plus or minus the standard error of the mean. This form is very common in scientific publications. For 15 adult female spiders, web areas (in centimeter2) are 634 ± 30. What are x-bar and s for these 15 spider webs?

Explanation / Answer

mean +/- standard error of mean

=mean+/-standard deviation /root over n

Thus mean=634

SE=30

or s/root over n=30

or s=30*root over 15

or s=116.189

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